CVE-2026-100108
MediumCVSS 6.4Exploitation Probability (EPSS)
Low risk9th percentile - higher than 9% of all known CVEs
Summary
The Social Share Buttons plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'form (containing share_url)' parameter in all versions up to, and including, 1.30 due to insufficient input sanitization and output escaping. An authenticated attacker with subscriber-level access or above can inject arbitrary web scripts into pages that execute whenever a user accesses the injected page.
Risk Assessment
A low-privileged attacker can execute arbitrary JavaScript in other users' browsers, potentially leading to session theft or account takeover.
Recommendation
Update the Social Share Buttons plugin to a version later than 1.30 or disable it if no fix is available.
Other vulnerabilities in Social Share Buttons
Original NVD description (English source)
The Social Share Buttons plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'form (containing share_url)' parameter in all versions up to, and including, 1.30 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires that the 7-day review-nag timer has elapsed since the attacker's first wp-admin visit, as the nonce needed to reach the save-network handler is only rendered in the DOM once that timer has passed.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS